Electrical control system of constant pressure-type hydraulic pitch-adjusting device

Abstract

The invention discloses an electrical control system of a constant pressure-type hydraulic pitch-adjusting device, which comprises a hydraulic station, a solenoid valve, a pressure sensor, a displacement sensor, a PLC ( Programmable Logic Controller) and an analog-to-digital conversion module, wherein, the pressure sensor is installed in a rod cavity and a rodless cavity of a fluid cylinder in the hydraulic station; the displacement sensor is installed in the fluid cylinder in the hydraulic station; the pressure sensor and the displacement sensor transmit pressure signals and displacement signals which are detected from the hydraulic station to the PLC; and the PLC transmits the signals to the solenoid valve through the analog-to-digital conversion module. The electrical control system ofthe constant pressure-type hydraulic pitch-adjusting device replaces the driving and controlling of a mechanical transmission pitch-adjusting device and a hydraulic system through the fluid cylinder,improves the roller spacing control accuracy and the safety protection pressure accuracy, achieves the automatic control of the roller spacing, improves the operation reliability of an open mill, ensures the operation seriality, improves the efficiency and the 1product quality, reduces the labor intensity of operators, and meets the various requirements for a pitch-adjusting system of the open mill according to the Europe CE (Communate Europpene) safety standards.

Description

technical field [0001] The invention relates to an electrical control system of a hydraulic distance adjusting device of an open mill, in particular to an electrical control system of a constant pressure hydraulic distance adjusting device. Background technique [0002] The open mill is one of the most commonly used basic equipment for the processing of rubber and plastic products. The distance adjustment device of the open mill is used to adjust the distance between the two rollers of the open mill, so that the open mill can operate under different roller distances. Work, and together with the safety device to form the safety protection device of the mill, to prevent damage to key parts such as rollers, racks, bearings, etc. due to the overload of the rollers. It is a mechanical combination structure such as motor, reducer, worm gear-worm, screw-nut, etc. This structure generally has the following problems in the use process: the distance of the open mill cannot be adjuste...

AI Technical Summary

Problems solved by technology

[0002] The open mill is one of the most commonly used basic equipment for the processing of rubber and plastic products. The distance adjustment device of the open mill is used to adjust the distance between the two rollers of the open mill, so that the open mill can operate under different roller distances. Work, and together with the safety device to form the safety protection device of the mill, to prevent damage to key parts such as rollers, racks, bearings, etc. due to the overload of the rollers. It is a mechanical combination structure such as motor, reducer, worm gear-worm, screw-nut, etc. This structure generally has the following problems in the use process: the distance of the open mill cannot be adjusted quickly during work, and the production process cannot be achieved. Due to the large gap between the distance adjustment device and the safety device, which cannot be eliminated, there is an empty stroke of about 3mm during the distance adjustment process, and there is no display on the dial, so that the display scale is different from the actual roller. There is a large deviation from the distance; it cannot be opened quickly during an emergency stop, and it does not meet the CE safety standard, which affects the sales to users who implement the CE standard.

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